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- /*
- * Copyright (c) 1988 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted provided
- * that: (1) source distributions retain this entire copyright notice and
- * comment, and (2) distributions including binaries display the following
- * acknowledgement: ``This product includes software developed by the
- * University of California, Berkeley and its contributors'' in the
- * documentation or other materials provided with the distribution and in
- * all advertising materials mentioning features or use of this software.
- * Neither the name of the University nor the names of its contributors may
- * be used to endorse or promote products derived from this software without
- * specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)utilities.c 5.1 (Berkeley) 9/14/90";
- #endif /* not lint */
-
- #define TELOPTS
- #define TELCMDS
- #include <arpa/telnet.h>
- #include <sys/types.h>
- #include <sys/time.h>
- #ifdef AMI_TCP
- #include <bsdsocket.h>
- #else
- #include <ss/socket.h>
- #endif
-
- #include <ctype.h>
-
- #include "general.h"
-
- #include "fdset.h"
-
- #include "ring.h"
-
- #include "defines.h"
-
- #include "externs.h"
-
- FILE *NetTrace = 0; /* Not in bss, since needs to stay */
- int prettydump;
-
- /*
- * upcase()
- *
- * Upcase (in place) the argument.
- */
-
- void
- upcase(argument)
- register char *argument;
- {
- register int c;
-
- while ((c = *argument) != 0) {
- if (islower(c)) {
- *argument = toupper(c);
- }
- argument++;
- }
- }
-
- int
- SetSockOpt(fd, level, option, yesno)
- int
- fd,
- level,
- option,
- yesno;
- {
- return setsockopt(fd, level, option,
- (char *)&yesno, sizeof yesno);
- }
-
- /*
- * The following are routines used to print out debugging information.
- */
-
- unsigned char NetTraceFile[256] = "(standard output)";
-
- void
- SetNetTrace(file)
- register char *file;
- {
- if (NetTrace && NetTrace != stdout)
- fclose(NetTrace);
- if (file && (strcmp(file, "-") != 0)) {
- NetTrace = fopen(file, "w");
- if (NetTrace) {
- strcpy(NetTraceFile, file);
- return;
- }
- fprintf(stderr, "Cannot open %s.\n", file);
- }
- NetTrace = stdout;
- strcpy(NetTraceFile, "(standard output)");
- }
-
- void
- Dump(direction, buffer, length)
- char direction;
- char *buffer;
- int length;
- {
- # define BYTES_PER_LINE 32
- #ifndef min
- # define min(x,y) ((x<y)? x:y)
- #endif
- char *pThis;
- int offset;
- extern pettydump;
-
- offset = 0;
-
- while (length) {
- /* print one line */
- fprintf(NetTrace, "%c 0x%x\t", direction, offset);
- pThis = buffer;
- if (prettydump) {
- buffer = buffer + min(length, BYTES_PER_LINE/2);
- while (pThis < buffer) {
- fprintf(NetTrace, "%c%.2x",
- (((*pThis)&0xff) == 0xff) ? '*' : ' ',
- (*pThis)&0xff);
- pThis++;
- }
- length -= BYTES_PER_LINE/2;
- offset += BYTES_PER_LINE/2;
- } else {
- buffer = buffer + min(length, BYTES_PER_LINE);
- while (pThis < buffer) {
- fprintf(NetTrace, "%.2x", (*pThis)&0xff);
- pThis++;
- }
- length -= BYTES_PER_LINE;
- offset += BYTES_PER_LINE;
- }
- if (NetTrace == stdout) {
- fprintf(NetTrace, "\r\n");
- } else {
- fprintf(NetTrace, "\n");
- }
- if (length < 0) {
- fflush(NetTrace);
- return;
- }
- /* find next unique line */
- }
- fflush(NetTrace);
- }
-
-
- void
- printoption(direction, fmt, option)
- char *direction, *fmt;
- int option;
- {
- if (!showoptions)
- return;
- fprintf(NetTrace, "%s ", direction);
- if (TELOPT_OK(option))
- fprintf(NetTrace, "%s %s", fmt, TELOPT(option));
- else if (TELCMD_OK(option))
- fprintf(NetTrace, "%s %s", fmt, TELCMD(option));
- else
- fprintf(NetTrace, "%s %d", fmt, option);
- if (NetTrace == stdout)
- fprintf(NetTrace, "\r\n");
- else
- fprintf(NetTrace, "\n");
- return;
- }
-
- optionstatus()
- {
- register int i;
- extern char will_wont_resp[], do_dont_resp[];
-
- for (i = 0; i < 256; i++) {
- if (do_dont_resp[i]) {
- if (TELOPT_OK(i))
- printf("resp DO_DONT %s: %d\n", TELOPT(i), do_dont_resp[i]);
- else if (TELCMD_OK(i))
- printf("resp DO_DONT %s: %d\n", TELCMD(i), do_dont_resp[i]);
- else
- printf("resp DO_DONT %d: %d\n", i,
- do_dont_resp[i]);
- if (my_want_state_is_do(i)) {
- if (TELOPT_OK(i))
- printf("want DO %s\n", TELOPT(i));
- else if (TELCMD_OK(i))
- printf("want DO %s\n", TELCMD(i));
- else
- printf("want DO %d\n", i);
- } else {
- if (TELOPT_OK(i))
- printf("want DONT %s\n", TELOPT(i));
- else if (TELCMD_OK(i))
- printf("want DONT %s\n", TELCMD(i));
- else
- printf("want DONT %d\n", i);
- }
- } else {
- if (my_state_is_do(i)) {
- if (TELOPT_OK(i))
- printf(" DO %s\n", TELOPT(i));
- else if (TELCMD_OK(i))
- printf(" DO %s\n", TELCMD(i));
- else
- printf(" DO %d\n", i);
- }
- }
- if (will_wont_resp[i]) {
- if (TELOPT_OK(i))
- printf("resp WILL_WONT %s: %d\n", TELOPT(i), will_wont_resp[i]);
- else if (TELCMD_OK(i))
- printf("resp WILL_WONT %s: %d\n", TELCMD(i), will_wont_resp[i]);
- else
- printf("resp WILL_WONT %d: %d\n",
- i, will_wont_resp[i]);
- if (my_want_state_is_will(i)) {
- if (TELOPT_OK(i))
- printf("want WILL %s\n", TELOPT(i));
- else if (TELCMD_OK(i))
- printf("want WILL %s\n", TELCMD(i));
- else
- printf("want WILL %d\n", i);
- } else {
- if (TELOPT_OK(i))
- printf("want WONT %s\n", TELOPT(i));
- else if (TELCMD_OK(i))
- printf("want WONT %s\n", TELCMD(i));
- else
- printf("want WONT %d\n", i);
- }
- } else {
- if (my_state_is_will(i)) {
- if (TELOPT_OK(i))
- printf(" WILL %s\n", TELOPT(i));
- else if (TELCMD_OK(i))
- printf(" WILL %s\n", TELCMD(i));
- else
- printf(" WILL %d\n", i);
- }
- }
- }
-
- }
-
- char *slcnames[] = { SLC_NAMES };
-
- void
- printsub(direction, pointer, length)
- char direction; /* '<' or '>' */
- unsigned char *pointer; /* where suboption data sits */
- int length; /* length of suboption data */
- {
- register int i;
-
- if (showoptions) {
- if (direction) {
- fprintf(NetTrace, "%s suboption ",
- (direction == '<')? "Received":"Sent");
- if (length >= 3) {
- register int j;
-
- i = pointer[length-2];
- j = pointer[length-1];
-
- if (i != IAC || j != SE) {
- fprintf(NetTrace, "(terminated by ");
- if (TELOPT_OK(i))
- fprintf(NetTrace, "%s ", TELOPT(i));
- else if (TELCMD_OK(i))
- fprintf(NetTrace, "%s ", TELCMD(i));
- else
- fprintf(NetTrace, "%d ", i);
- if (TELOPT_OK(j))
- fprintf(NetTrace, "%s", TELOPT(j));
- else if (TELCMD_OK(j))
- fprintf(NetTrace, "%s", TELCMD(j));
- else
- fprintf(NetTrace, "%d", j);
- fprintf(NetTrace, ", not IAC SE!) ");
- }
- }
- length -= 2;
- }
- if (length < 1) {
- fprintf(NetTrace, "(Empty suboption???)");
- return;
- }
- switch (pointer[0]) {
- case TELOPT_TTYPE:
- fprintf(NetTrace, "TERMINAL-TYPE ");
- switch (pointer[1]) {
- case TELQUAL_IS:
- fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2);
- break;
- case TELQUAL_SEND:
- fprintf(NetTrace, "SEND");
- break;
- default:
- fprintf(NetTrace,
- "- unknown qualifier %d (0x%x).",
- pointer[1], pointer[1]);
- }
- break;
- case TELOPT_TSPEED:
- fprintf(NetTrace, "TERMINAL-SPEED");
- if (length < 2) {
- fprintf(NetTrace, " (empty suboption???)");
- break;
- }
- switch (pointer[1]) {
- case TELQUAL_IS:
- fprintf(NetTrace, " IS ");
- fprintf(NetTrace, "%.*s", length-2, (char *)pointer+2);
- break;
- default:
- if (pointer[1] == 1)
- fprintf(NetTrace, " SEND");
- else
- fprintf(NetTrace, " %d (unknown)", pointer[1]);
- for (i = 2; i < length; i++)
- fprintf(NetTrace, " ?%d?", pointer[i]);
- break;
- }
- break;
-
- case TELOPT_LFLOW:
- fprintf(NetTrace, "TOGGLE-FLOW-CONTROL");
- if (length < 2) {
- fprintf(NetTrace, " (empty suboption???)");
- break;
- }
- switch (pointer[1]) {
- case 0:
- fprintf(NetTrace, " OFF"); break;
- case 1:
- fprintf(NetTrace, " ON"); break;
- default:
- fprintf(NetTrace, " %d (unknown)", pointer[1]);
- }
- for (i = 2; i < length; i++)
- fprintf(NetTrace, " ?%d?", pointer[i]);
- break;
-
- case TELOPT_NAWS:
- fprintf(NetTrace, "NAWS");
- if (length < 2) {
- fprintf(NetTrace, " (empty suboption???)");
- break;
- }
- if (length == 2) {
- fprintf(NetTrace, " ?%d?", pointer[1]);
- break;
- }
- fprintf(NetTrace, " %d %d (%d)",
- pointer[1], pointer[2],
- (int)((((unsigned int)pointer[1])<<8)|((unsigned int)pointer[2])));
- if (length == 4) {
- fprintf(NetTrace, " ?%d?", pointer[3]);
- break;
- }
- fprintf(NetTrace, " %d %d (%d)",
- pointer[3], pointer[4],
- (int)((((unsigned int)pointer[3])<<8)|((unsigned int)pointer[4])));
- for (i = 5; i < length; i++)
- fprintf(NetTrace, " ?%d?", pointer[i]);
- break;
-
- case TELOPT_LINEMODE:
- fprintf(NetTrace, "LINEMODE ");
- if (length < 2) {
- fprintf(NetTrace, " (empty suboption???)");
- break;
- }
- switch (pointer[1]) {
- case WILL:
- fprintf(NetTrace, "WILL ");
- goto common;
- case WONT:
- fprintf(NetTrace, "WONT ");
- goto common;
- case DO:
- fprintf(NetTrace, "DO ");
- goto common;
- case DONT:
- fprintf(NetTrace, "DONT ");
- common:
- if (length < 3) {
- fprintf(NetTrace, "(no option???)");
- break;
- }
- switch (pointer[2]) {
- case LM_FORWARDMASK:
- fprintf(NetTrace, "Forward Mask");
- for (i = 3; i < length; i++)
- fprintf(NetTrace, " %x", pointer[i]);
- break;
- default:
- fprintf(NetTrace, "%d (unknown)", pointer[2]);
- for (i = 3; i < length; i++)
- fprintf(NetTrace, " %d", pointer[i]);
- break;
- }
- break;
-
- case LM_SLC:
- fprintf(NetTrace, "SLC");
- for (i = 2; i < length - 2; i += 3) {
- if (pointer[i+SLC_FUNC] <= NSLC)
- fprintf(NetTrace, " %s", slcnames[pointer[i+SLC_FUNC]]);
- else
- fprintf(NetTrace, " %d", pointer[i+SLC_FUNC]);
- switch (pointer[i+SLC_FLAGS]&SLC_LEVELBITS) {
- case SLC_NOSUPPORT:
- fprintf(NetTrace, " NOSUPPORT"); break;
- case SLC_CANTCHANGE:
- fprintf(NetTrace, " CANTCHANGE"); break;
- case SLC_VARIABLE:
- fprintf(NetTrace, " VARIABLE"); break;
- case SLC_DEFAULT:
- fprintf(NetTrace, " DEFAULT"); break;
- }
- fprintf(NetTrace, "%s%s%s",
- pointer[i+SLC_FLAGS]&SLC_ACK ? "|ACK" : "",
- pointer[i+SLC_FLAGS]&SLC_FLUSHIN ? "|FLUSHIN" : "",
- pointer[i+SLC_FLAGS]&SLC_FLUSHOUT ? "|FLUSHOUT" : "");
- if (pointer[i+SLC_FLAGS]& ~(SLC_ACK|SLC_FLUSHIN|
- SLC_FLUSHOUT| SLC_LEVELBITS))
- fprintf(NetTrace, "(0x%x)", pointer[i+SLC_FLAGS]);
- fprintf(NetTrace, " %d;", pointer[i+SLC_VALUE]);
- if ((pointer[i+SLC_VALUE] == IAC) &&
- (pointer[i+SLC_VALUE+1] == IAC))
- i++;
- }
- for (; i < length; i++)
- fprintf(NetTrace, " ?%d?", pointer[i]);
- break;
-
- case LM_MODE:
- fprintf(NetTrace, "MODE ");
- if (length < 3) {
- fprintf(NetTrace, "(no mode???)");
- break;
- }
- {
- char tbuf[64];
- sprintf(tbuf, "%s%s%s%s%s",
- pointer[2]&MODE_EDIT ? "|EDIT" : "",
- pointer[2]&MODE_TRAPSIG ? "|TRAPSIG" : "",
- pointer[2]&MODE_SOFT_TAB ? "|SOFT_TAB" : "",
- pointer[2]&MODE_LIT_ECHO ? "|LIT_ECHO" : "",
- pointer[2]&MODE_ACK ? "|ACK" : "");
- fprintf(NetTrace, "%s", tbuf[1] ? &tbuf[1] : "0");
- }
- if (pointer[2]&~(MODE_EDIT|MODE_TRAPSIG|MODE_ACK))
- fprintf(NetTrace, " (0x%x)", pointer[2]);
- for (i = 3; i < length; i++)
- fprintf(NetTrace, " ?0x%x?", pointer[i]);
- break;
- default:
- fprintf(NetTrace, "%d (unknown)", pointer[1]);
- for (i = 2; i < length; i++)
- fprintf(NetTrace, " %d", pointer[i]);
- }
- break;
-
- case TELOPT_STATUS: {
- register char *cp;
- register int j, k;
-
- fprintf(NetTrace, "STATUS");
-
- switch (pointer[1]) {
- default:
- if (pointer[1] == TELQUAL_SEND)
- fprintf(NetTrace, " SEND");
- else
- fprintf(NetTrace, " %d (unknown)", pointer[1]);
- for (i = 2; i < length; i++)
- fprintf(NetTrace, " ?%d?", pointer[i]);
- break;
- case TELQUAL_IS:
- if (NetTrace == stdout)
- fprintf(NetTrace, " IS\r\n");
- else
- fprintf(NetTrace, " IS\n");
-
- for (i = 2; i < length; i++) {
- switch(pointer[i]) {
- case DO: cp = "DO"; goto common2;
- case DONT: cp = "DONT"; goto common2;
- case WILL: cp = "WILL"; goto common2;
- case WONT: cp = "WONT"; goto common2;
- common2:
- i++;
- if (TELOPT_OK((int)pointer[i]))
- fprintf(NetTrace, " %s %s", cp, TELOPT(pointer[i]));
- else
- fprintf(NetTrace, " %s %d", cp, pointer[i]);
-
- if (NetTrace == stdout)
- fprintf(NetTrace, "\r\n");
- else
- fprintf(NetTrace, "\n");
- break;
-
- case SB:
- fprintf(NetTrace, " SB ");
- i++;
- j = k = i;
- while (j < length) {
- if (pointer[j] == SE) {
- if (j+1 == length)
- break;
- if (pointer[j+1] == SE)
- j++;
- else
- break;
- }
- pointer[k++] = pointer[j++];
- }
- printsub(0, &pointer[i], k - i);
- if (i < length) {
- fprintf(NetTrace, " SE");
- i = j;
- } else
- i = j - 1;
-
- if (NetTrace == stdout)
- fprintf(NetTrace, "\r\n");
- else
- fprintf(NetTrace, "\n");
-
- break;
-
- default:
- fprintf(NetTrace, " %d", pointer[i]);
- break;
- }
- }
- break;
- }
- break;
- }
-
- case TELOPT_XDISPLOC:
- fprintf(NetTrace, "X-DISPLAY-LOCATION ");
- switch (pointer[1]) {
- case TELQUAL_IS:
- fprintf(NetTrace, "IS \"%.*s\"", length-2, (char *)pointer+2);
- break;
- case TELQUAL_SEND:
- fprintf(NetTrace, "SEND");
- break;
- default:
- fprintf(NetTrace, "- unknown qualifier %d (0x%x).",
- pointer[1], pointer[1]);
- }
- break;
-
- case TELOPT_ENVIRON:
- fprintf(NetTrace, "ENVIRON ");
- switch (pointer[1]) {
- case TELQUAL_IS:
- fprintf(NetTrace, "IS ");
- goto env_common;
- case TELQUAL_SEND:
- fprintf(NetTrace, "SEND ");
- goto env_common;
- case TELQUAL_INFO:
- fprintf(NetTrace, "INFO ");
- env_common:
- {
- register int noquote = 2;
- for (i = 2; i < length; i++ ) {
- switch (pointer[i]) {
- case ENV_VAR:
- if (pointer[1] == TELQUAL_SEND)
- goto def_case;
- fprintf(NetTrace, "\" VAR " + noquote);
- noquote = 2;
- break;
-
- case ENV_VALUE:
- fprintf(NetTrace, "\" VALUE " + noquote);
- noquote = 2;
- break;
-
- case ENV_ESC:
- fprintf(NetTrace, "\" ESC " + noquote);
- noquote = 2;
- break;
-
- default:
- def_case:
- if (isprint(pointer[i]) && pointer[i] != '"') {
- if (noquote) {
- putc('"', NetTrace);
- noquote = 0;
- }
- putc(pointer[i], NetTrace);
- } else {
- fprintf(NetTrace, "\" %03o " + noquote,
- pointer[i]);
- noquote = 2;
- }
- break;
- }
- }
- if (!noquote)
- putc('"', NetTrace);
- break;
- }
- }
- break;
-
- default:
- fprintf(NetTrace, "Unknown option ");
- for (i = 0; i < length; i++)
- fprintf(NetTrace, " %d", pointer[i]);
- break;
- }
- if (direction) {
- if (NetTrace == stdout)
- fprintf(NetTrace, "\r\n");
- else
- fprintf(NetTrace, "\n");
- }
- }
- }
-
- /* EmptyTerminal - called to make sure that the terminal buffer is empty.
- * Note that we consider the buffer to run all the
- * way to the kernel (thus the select).
- */
-
- void
- EmptyTerminal()
- {
- if (TTYBYTES() != 0) {
- while (TTYBYTES()) {
- (void) ttyflush(0);
- }
- }
- }
-
- void
- SetForExit()
- {
- setconnmode(0);
- do {
- (void)telrcv(); /* Process any incoming data */
- EmptyTerminal();
- } while (ring_full_count(&netiring)); /* While there is any */
- setcommandmode();
- fflush(stdout);
- fflush(stderr);
- setconnmode(0);
- EmptyTerminal(); /* Flush the path to the tty */
- setcommandmode();
- }
-
- void
- Exit(returnCode)
- int returnCode;
- {
- SetForExit();
- exit(returnCode);
- }
-
- void
- ExitString(string, returnCode)
- char *string;
- int returnCode;
- {
- SetForExit();
- fwrite(string, 1, strlen(string), stderr);
- exit(returnCode);
- }
-
- void sleep(secs)
- int secs;
- { Delay(50*secs);
- }
-